Endless-chain grate.



No. 75,899. Patented 000. I6, I902.

W. J. TAYLOR.

ENDLESSCHAIN GBATE.

(Application filed Mar. 29, 1901.) (No Model.) 4 $ha'ots-Shaet l.

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W.J.Ta1. 'l.ur., v 7 BY.

Patented Dec. I6, I902.

w. J. TAYLOR. ENDLESS CHAIN GBATE.

A nmion filed Mar. $9, 1901.

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WITNESSES:

Jhgi/ ATTORNEY.

No. 75,899. Patented Dec. I6, |902.

W. J. TAYLORQ ENDLESS cum anus.

Application fi led Mar. 29, 1901.

(N0 Modal.) I v 4 Sheets-Shut 3.

l0 v 1b Patented D06. I6, I902. w. J. TAYLOR.

ENDLESS CHAIN GRATE.

(No Model.)

A i limibn filed 1m. 29, 1901.)

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M A TTORNEY.

THE NORRIS PETERS 0 PHOYO-LITHO, WASHINGTIN. I). c

UNITED STATES PATENT OFF-Ion.

WILLIAM J. TAYLOR, OF KANSAS CITY, MISSOURI.

ENDLESS-CHAIN GRATE.

SPECIFICATION forming part of Letters Patent No. 715,899, dated December16, 1902.

Application filed March 29, 1901. erial No. 53,428. (No model.)

T0 or whom, it may concern:

Be it known that LWILLIAM J. TAYLOR, a citizen of the United States ofAmerica, residing in Kansas City, in the county of Jacksonand State ofMissouri, have invented a new and useful Improvement in Endless-ChainGrates, of which the following is a specification, reference being hadtherein to the accompanying drawings, forming a part thereof.

My invention relates to improvements in endless-chain grates forboiler-furnaces.

The object of my invention is to provide a structure in which the ashes,cinders, and clinkers may be readily disposed of, so as to enable theoperator to keep a clean hot fire with a minimum of labor.

My invention has further for its object the providing of a constructionin which burned portions of the grate may be' quickly and easilyreplaced by new ones and without h aving to draw the fire or interferingwith the burning fuel. 7

My invention provides also a construction in which bituminous coal maybe burned with the production of a small amount of smoke or soot.

My invention comprises a fire-box provided with an air-inlet and anair-outlet opening in combination with an endless or traveling chaingrate, one side of which provides the fire or fuel support, and means bywhich the portion forming the fuel support may be made to move in adirection opposite to the direction of draft or from the exit-openingtoward theinlet-opening. Bythisconstruction the fuel may be fed upon thegrate near the bridge-wall and gradually fed forward toward theair-inlet opening, and the draft passing over the fuel will carry theheat and flame of the fuel over the fresh coal, thus consuming the smokeand producing better combustion.

My invention provides, further, a rocking grate disposed in a positionsuch that the ma terial carried on the grate will eventually bedeposited upon the rocking grate, from which it can be readily removedby rocking the said grate.

My invention provides,still further,an endless-chain grate comprising aseries of parallel grate-supporting bars and a series of linksconnecting the said bars, so as to form an endless chain, and aplurality of gratebars mounted on each grate-supporting bar, to whichthey are hinged, the grate-bars being adapted to swing thereon into aposition such that the free ends thereof will rest upon adjacentgrate-supporting bars. The disposition of these grate-bars is such thatas the grate is made to travel the grate-bars on one side of the chainwill form the fire-support, and on the other side the bars will be sodisposed as' to permit the passage between them of ashes and air.

My invention provides also suitable carrying-wheels for supporting theendless chain and means by which the operator may cause the grate totravel.

My invention provides,still further,certain novel features ofconstruction, hereinafter fully described and claimed.

In the accompanying drawings,which illustrate my invention, Figure 1 isa vertical sectional view taken on the dotted linerij of Fig. 2,portions of some of the parts being broken away. Fig. 2 is a horizontalsectional view taken on the dotted line kl of Fig. 1, portions beingbroken away to disclose the driving chain or belt. Fig. 3 is a verticalsectional view taken on the dotted line 0 d of Fig. 1, a portion ofthree of the detachable members on one of the grate-supporting barsbeing broken away and the grate-bars connected therewith shown incross-section.

Fig. 4 represents a view, partially in elevation and partially invertical section, of three grate-supporting bars, the detachable membersthereon, and the grate-bars connected therewith. Fig. 5 is a plan viewof one of the gratesupporting bars having thereon two detachablemembers, the grate-bars of one of the said members and the grate-barscarried by it being shown in horizontal section. Fig. 6 is an endelevation view of the left supporting-plate of the fire-box. Fig. 7 is avertical sectional view taken on the dotted line a b of Fig. 2, some ofthe parts shown in Fig. 2 being omitted in this view. Fig. Sis a sideelevation view of the right fire-boX-supporting plate. Fig. 9 is a planview of one of the grate-supporting bars. Fig. 10 is a perspective viewof one of the detachable members. Fig. 11 is a perspective View of oneof the Fig. 12 is a side elevation view grate-bars.

of the mechanism for rocking the rocking grate, which is shown incross-section, and a portion of the operating-lever being broken off.Fig. 13 is a top view of one end of a grate-supporting bar having twolinks attached thereto, one of which is shown in horizontal section.Fig. 14 is an end view of a grate-supporting bar having one linkconnected thereto, the other being removed.

Similarnumerals of referenceindicate similar parts.

1 indicates the boiler, 2 the bridge-wall, and 3 the front of thefire-box, all of which are of the ordinary construction. At the front ofthe fire-box is a transverse vertical plate 4, and at the rear end is asimilarly-disposed curved plate 5. These two plates aresecurelysupported by the fire-box walls. Supported at their ends bythese two plates in any desirable manner are the right and leftsupporting-plates 6 and 7, respectively, located, respectively, at thesides of the fire-box and provided with openings in which are rotatablymounted the two parallel shafts 8 and 9, respectively. Upon each end ofeach shaft is rigidly secured a carrying-wheel 10, provided withperipheral notches adapted to receive therein the projections 11, whichare provided two on each end of each of the gratesupporting bars 12,which are disposed parallel with each other and are consecutivelyconnected by means of a series of links 13, the two ends of each ofwhich are pivotally connected with the adjacent projections 11 onadjacent bars. The links and the grate-supporting bars 12 form anendless chain or belt supported by meansof the projections 11 upon thefour carrying-wheels 10, the said chain or belt being made to travel byrotating, as hereinafter described,the carrying-wheels 10. In order toprevent the links from getting off the projections 11, a projection 14is provided on each end of each bar 12, the two sides of the projectionbeing recessed in a dovetail manner, so as to receive the tapered end ofthe adjacent link. The formation of the ends of each link is such thatby turning the link on its projection 11 sufliciently the tapered end ofthe link that enters the dovetail recess in the projection 14 will passout of such recess, at which time the link may be slipped oi theprojection 11. This forma-' tion is achieved by making the tapered endof the link eccentric with the center of the opening in the link throughwhich the projection 11 extends. In order to support the portion of theupper side of the chain grate located between the carrying-wheels, eachside plate 6 and 7 is provided on its inner side with a longitudinalhorizontal flange 15, adapted to receive 011 its upper side theprojections 11 as they are disengaged from the carrying-wheels l0.Mounted on each bar 12 are one or more detachable members 16, comprisingeach a bodyprovided with two downwardly-extending arms, which embracethe sides of the bar 12. Each of these arms is provided with abolt-hole, through which extends a bolt 17, which extends also throughthe bar 12 and has a nut 18 on one end. The member 16 is provided with avertical flange, from the rear side of which extend a plurality of ears19, to each of which is secured, by means of a pintle 20, a grate-bar21, the forward end of which is bifurcated and the rear end of which isadapted to be supported by the adjacent bar 12 through the intermediacyof the member 16, carried thereon. The construction of the members 16,the grate-bars 21, and the bars 12 is best shown in Figs. 4, 5, 9, and10. At the forward end of the endless grate-chain is a transversehorizontal rocking grate 22, the upper surface of which is in positionto receive thereon the ashes, cinders, and clinkers carried on the upperportion or fire-support of the chain grate as the grate travels forward.Each end of the rocking grate 22 is provided with a projection 23, whichenters a hole provided for it in one of the side plates 6 or 7. On theleft end of the rocking grate 22 as viewed from the front is pivoted therear end of a forwardly-extending link 24, the forward end of which ispivoted to the lower end of an upright lever 25, which in turn ispivoted to a bracket 26, secured to the forward side of the front of thefire-box. Pivoted to the bracket 26 is a pawl 27, the lower end of whichis adapted to enter a notch provided in the link 24 in such a manner asto prevent movement of the link rearwardly, and thus preventing therocking of the grate 22. Upon the shaft 8 is rigidly secured a belt orsprocket wheel 28, which is connected by means of a belt 29 orsprocketchain with a driving-belt Wheel or sprocketwheel 30, which inturn is rotatably mounted in a bracket 31, secured to the forward sideof the front of the fire-box by means of a horizontal shaft 32, to whichthe wheel 30 is secured. Rotatable with the shaft 32 is a ratchet wheel33, the teeth of which are adapted to be engaged by a pawl 34, pivotedto an upright lever 35, one end of which is pivoted to the shaft 32.

My invention is operated in the following manner: The parts having beenassembled, as described, the fuel is placed upon the upper horizontalportion of the endlesschain grate resting upon the grate-bars 21. Whennew fuel is to be placed upon the grate, the lever 35 is reciprocatedforward and backward, thus rotating the shaft 32 through theintermediacy of the pawl 34 and ratchetwheel 33. The driving-belt Wheel30 is thus rotated, communicating its rotation, through the belt 29,belt-wheel 28, and shaft 8, to the carrying wheels 10. The rotating ofthe carrying wheels causes the chain grate to travel by engaging withthe projections 11 on the grate-supporting bars 12, and the old fuel isthus carried forward away from the bridgewall 2 toward the rocking grate22. An open or clear space is thus provided on the grate in front of thebridge-wall 2, in which space the fresh fuel is deposited. The flame andheat from the old or partially-consumed fuel is thus carried over thefresh fuel, causing the smoke and gas therefrom to be consumed. At eachtime that the fresh fuel is inserted the chain grate is thus caused totravel in the direction indicated by the arrows in Fig. 1, the oldestfuel, or rather its remains-so ch as ashes, cinder-s, and clinkersbeingfinally deposited on the rocking grate 22, from which it can be removedby rocking the grate, as indicated by the arrow, Fig. 1. This isaccomplished by disengaging the pawl 27 from the link 24 and thenpulling the upper end of the lever forward, which will rock the grate22, and thus deposit the material carried thereon into the ash-pit. Asthe belt passes around the forward carrying-wheels 10, the grate-bars 21willswing into the position shown in Fig. l-that is, into a verticalposition-thus providing open spaces in the lower part of the chain beltor grate for the admission of air from below or the passage of ashesfrom above. As the belt or chain grate passes around the rear wheels 10the grate-bars will drop into their-former horizontal positions. servesas a guard preventing fuel from passing rearwardly. Each of thegrate-bars 21 is provided with a vertical slot therethrough, asindicated by 36, through which air can enter into the fuel.

It at any time any of the parts exposed to the heat become burned out,they can be replaced by removing the bolt 17 and lifting outthe member16, secured thereby to the bar 12. The pintle 20 can then be removed,and new grate-bars may then be inserted for those burned out, or a newmember 16 may be made to replace the old one, after which the parts arereplaced and the bolt 17 reinserted and secured in place by the nut 18.A further function is performed by having the gratebars 21 hinged attheir forward ends only. With this construction easy access to theinside of the chain grate may be had for the removal of the bolts 17when it is desired to replace any of the parts.

My invention is capable of any modifications without departing from itsspirit.

Having thus described myinvention, what I claim, and desire to secure byLetters Patent, is-

1. Achain grate comprising a series of parallel grate-supporting bars,links connecting corresponding ends of adjacent bars so as to form anendless belt or chain, a member carried by each of said grate-supportingbars, and a plurality of grate-bars hinged to each member and adapted toso swing thereon as to rest upon an adjacent grate-supporting bar,substantially as described.

2. In a chain grate, the combination with a series of parallelgrate-supporting bars, of links connecting corresponding ends ofadjacent bars so as to form an endless belt, a mem- The curved plate 5.

her carried by each grate-supporting'bar, and a grate-bar hinged to eachof said members and adapted to swing thereon so as to rest upon theadjacent grate-supporting bar, substantially as described.

3. A chain grate comprising a series of parallel grate-supporting bars,links connecting corresponding ends of adjacent bars so as to form anendless belt or chain, a plurality of members carried by eachgratesupporting bar, and a plurality of grate-bars hinged each atone endto each of said members and adapted to swing thereon so as to rest uponan adjacent grate-supporting bar, substantially as described.

4. A chain grate comprising a series of parallel grate-supporting bars,links connecting corresponding ends of adjacent bars so as to form anendless belt or chain, a plurality of members carried by eachgratesupporting bar, and a plurality of grate-bars, each of said membershaving one of said grate-bars hinged at one end thereto and adapted toswing thereon so as to rest upon a grate-supporting bar adjacent to theone carrying the said member, substantially as described.

5; In an endless-chain grate, the combination with a series of parallelgrate-supporting bars, of a series of links connecting correspondingends of adjacent bars so as to form an endless chain or belt, a membercarried by each grate-supporting bar a plurality of gratebars mounted oneach of said members and having a hinged connection therewith andadapted to swing thereon so as to rest upon an adjacent grate-supportingbar, and a plurality of carrying-wheels provided with means for engagingand driving the endless chain comprising the links and gratesupportingbars, substantially as described.

6. In an endless-chain grate, the combination with a series of parallelgrate-supporting bars provided each at each end with a projection,of aseries of links connecting corresponding ends of adjacent bars so as toform an. endless chain or belt, a member carried by eachgrate-supporting bar a plurality of gratebars mounted on each of saidmembers and having a hinged connection therewith and adapted to swingthereon so as to rest upon an adjacent grate-supporting bar, and aplurality of carrying-wheels provided with means for engaging anddriving the grate-supporting bars through the intermediacy of the said Iprojections on the grate-supporting bars, substantially as described;

7. In an endless-chain grate, the combination with a series of parallelgrate-supporting bars, of a series of links connecting correspondingends of adjacent bars so as to form an endless chain or belt, a membercarried by each grate-supporting bara plurality of gratebars mounted oneach of said members and having a hinged connection therewith, aplurality of carrying-wheels embraced by the said endless chain or belt,and means for rotating the said carrying-wheels, scribed.

S. In an endless-chain grate, the combination with a series of parallelgrate-supporting bars, of a series of links connecting correspondingends of adjacent bars so as to form an endless chain or belt, a membercarried by each gratesupporting bar a plurality of gratebars mounted oneach of said members and having a hinged connection therewith, aplurality of carrying-wheels embraced by the said endless chain or belt,a lever, and means for rotating the said carrying-wheels and driving thesaid endless chain or belt when the lever is operated, substantially asdescribed.

9. In an endless-chain grate, the combination with a series of parallelgrate-supporting bars, of a series of links connecting correspondingends of adjacent bars so as to form an endless chain, a member carriedby each grate-supporting bar a plurality of grate-bars mounted upon eachof said members and havinga hinged connection therewith, a plurality ofcarrying-wheels embraced by the said endless chain, a lever, a pawlcarried thereon, a ratchet-wheel engaged by the said pawl, and means forimparting rotation from the ratchetwheel to the carrying-wheels,substantially as described.

10. In an endless-chain grate, the combination with a series of parallelgrate-supporting bars, of a series of links connecting the same so as toform an endless chain, a member carried by each grate-supporting baraplurality of grate-bars mounted upon each of said members and having ahinged connection therewith, a plurality of carrying-wheels embraced bythe said endless chain, a shaft rotatable with two of the saidcarrying-wheels, a lever, and means for imparting rotation to the saidshaft when the said lever is operated, substantially as described.

11. In an endless-chain grate, the combination with a series of parallelgrate-supporting bars, of a series of links connecting the said bars soas to form an endless chain, a member carried by each grate-supportingbar a plurality of grate-bars mounted on each of said members and havinga hinged connection therewith, a plurality of carryingwheels embraced bythe said endless chain, a shaft substantially as derotatable with two ofsaid carrying-wheels, a belt-wheel rotatable with the said shaft, alever, a driving-belt wheel,a belt connecting the two belt-wheels,andmeans for imparting rotation to the driviug-beltwheel when the lever isoperated, substantially as described.

12. In an endless-chain grate, the combination with a series of parallelgrate'supporting bars, of a series of links connecting the said bars soas to form an endless chain, a member carried by each grate-supportingbar a plurality oi grate-bars mounted on each of said members and havinga hinged connection therewith, a plurality of carrying-wheels embracedby the said endless chain, a shaft rotatable with two of the saidcarrying-Wheels, a belt-wheel rotatable with the said shaft, a lever, apawl carried by the lever, a ratchetwheel engaging the said pawl, adriving-belt wheel rotatable with the ratchet-wheel, and a beltconnecting the two belt-wheels, substantially as described.

13. In an endless-chain grate, the combination with a series ofgrate-supporting bars each provided at each end with three projections,of links connecting the outer projections with the outer projections ofadjacent bars, the central projections being so formed as to prevent theremoval of the links from the projections on which they are mountedexcepting when the links have been turned on the said projections to aproper position, substantially as described.

14. In an endless-chain grate, the combination with a grate-supportingbar, of a detachable member mounted thereon, and a series of grate-barseach having a hinged connection with the said detachable member,substantially as described. I

15. In an endless-chain grate, the combination with a grate-supportingbar, of aplurality of detachable members mounted thereon, and aplurality of grate-bars each having a hinged connection with the saiddetachable members, substantially as described.

16. In an endless-chain grate, the combination with a grate-supportingbar, of a plurality of detachable members mounted thereon and providedeach with a plurality of ears, and a plurality of grate-bars hinged oneto each of said ears, substantially as described.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

\VILLIAM J. TAYLOR.

Witnesses:

WARREN D. HOUSE, JEssIE R. CoMsTocK.

